Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

TRIPLETT ET550 GFCI Receptacle Tester, 5-15P, 30 mA, CAT III 135V - GFCI Testers
TRIPLETTGFCI Testers

TRIPLETT ET550 GFCI Receptacle Tester, 5-15P, 30 mA, CAT III 135V

The TRIPLETT ET550 is an AFCI/GFCI Receptacle Tester designed for 120 V AC to 120 V AC operation with a 5-15P plug. It features a load current of 30 mA and carries a CAT III 135V safety rating. This GFCI tester uses…

SKU 3G-OTH-173102

Also listed as: ET 550 · ET-550

Brand
TRIPLETT
Item
ET550 GFCI Receptacle Tester, 5-15P, 30 mA, CAT III 135V
Category
GFCI Testers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

TRIPLETT
Manufacturer Part Number
ET550
Type
5-15P, GFCI, CAT III 135V, Light
Load Current
30 mA
CAT Safety Rating
CAT III 135V

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

TRIPLETT Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The TRIPLETT ET550 is an AFCI/GFCI Receptacle Tester designed for 120 V AC to 120 V AC operation with a 5-15P plug. It features a load current of 30 mA and carries a CAT III 135V safety rating. This GFCI tester uses indicator lights to verify outlet wiring and GFCI functionality.

Frequently Asked Questions

What is the TRIPLETT ET550 used for?

The TRIPLETT ET550 is a receptacle tester that verifies outlet wiring and GFCI functionality in 120 V AC circuits. It uses indicator lights to detect common wiring faults and test ground-fault protection, making it essential for electricians and maintenance technicians inspecting residential or commercial outlets.

What are the specifications of the TRIPLETT ET550?

The TRIPLETT ET550 operates from 120 V AC to 120 V AC with a 5-15P plug and a load current of 30 mA. It carries a CAT III 135V safety rating. The tester uses indicator lights for wiring verification and GFCI testing. The manufacturer part number is ET550.

Where to buy the TRIPLETT ET550 worldwide?

3G Electric supplies the TRIPLETT ET550 worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this GFCI tester to any country.

How to use the TRIPLETT ET550 GFCI tester?

Plug the TRIPLETT ET550 into a 120 V AC outlet. Observe the indicator lights to identify correct wiring or faults such as open ground or reversed polarity. Press the GFCI test button to verify ground-fault protection. Always follow local electrical safety codes and use appropriate personal protective equipment.

Used in

Common applications for TRIPLETT
Electrical panel troubleshooting — TRIPLETT 9007A digital multimeter for CAT III 600V AC voltage checks
HVAC system diagnostics — TRIPLETT CFM400 rotating vane anemometer for air velocity and CFM measurement
Indoor air quality monitoring — TRIPLETT GSM200 carbon dioxide monitor with automatic baseline calibration
Temperature profiling in industrial processes — TRIPLETT TMP70-NIST thermocouple meter for Type K range up to 2,501°F
Environmental chamber validation — TRIPLETT RHT415-NIST hygro-thermometer with cabled sensor for humidity and temperature logging
Network cabling installation — TRIPLETT CAT5-HSPJAR pass-through RJ45 plugs for Category 5e solid cable termination
Not sure this is the right part? Photo-identify it

TRIPLETT Products

3G Electric supplies TRIPLETT gfci testers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Related products

More from TRIPLETT

View all TRIPLETT parts